C/2021 F1 (Lemmon-PANSTARRS)
ephemeris date magn radius delta ra dec elong phase PA
Nearest approach12 Feb 202210.91.334 AU1.413 AU20h29m+48°56'64.7°42.0°340°
Perihelion6 Apr 20229.60.997 AU1.902 AU01h06m+24°18'17.8°17.9°
Today16 Apr 202426.28.095 AU7.858 AU07h27m-85°16'100.1°7.0°94°
C/2021 F1 (Lemmon-PANSTARRS)- 2024-04-16

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The interactive orbit chart above shows the comet's path through the solar system and its position at the given date. Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below. (Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)

The orbital elements of C/2021 F1 (Lemmon-PANSTARRS) are:

            e (Eccentricity)                : 0.9958870
            q (Perihelion distance)         : 0.9973680
            i (Inclination)                 : 107.31600
            Ω (Longitude of ascending node) : 203.47750
            ω (Argument of perihelion)      : 146.87920
            L (Longitude of perihelion)     : 214.46666
            B (Latitude of perihelion)      : 31.44244
            T (Time of perihelion passage)  : 2459676.28350
            P (Orbital period in years)     : 3776.11

            Epoch                           : 2024 Apr 16
            Reference                       : MPEC 2022-QD9

            Classification(s):              : Nearly isotropic; Returning (a < 10000 AU); External (P > 200 years)

The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations respectively from COBS or the MPC. The gray curve is based on the absolute magnitude and slope parameter as calculated from the original MPEC, or the latest values provided by the MPC (13.50 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 8.26 + 5 log[∆] + 14.80 log[r]).

The all-sky chart below shows the path of the comet over the same period as the light curve. The comet's current position is marked yellow.